html,body
    line-height: 1
    font-weight: 200
    font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light', arial, sans-serif
.clearfix
    display: inline-block
    &:after
        display: block
        content: ''
        height: 0
        line-height: 0
        clear: both
        visibility: hidden
@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio:1.5)
    .border-1px
        &:after
            -webkit-transform: scaleY(0.7)
            transform: scaleY(0.7)
@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio:2)
    .border-1px
        &:after
            -webkit-transform: scaleY(0.5)
            transform: scaleY(0.5)
